Feeler mechanism



M. AUERBACH 1,556,137

FEELER MECHANISM ginal Filgd March 26 1925 2 Sheets-Shut i 2 Sheets-Sh. 2

Dec- 15 M AUERBACH FEELER MECHANISII "g1n51 Flled larch 26. 923

Patented Dec. 15, 1925.

Original application filed March 26, 192

UNITED STATES mix A ERBACH, on THE HAGUE, NETHERLANDS.

FEELER MEGHAnISM.

1 '0 all whom it may concern:

Be it known that 1, MAX AUERBAOH, a citizen of the Republic of Germany, residing at 138 Javastraat, The Hague, Netherlands, have invented certain new and useful Improvements in Feeler Mechanism, of which the following is a specification.

This invention relates, to weft feeler mechanism particularly designed for actuat ing the shuttle changing mechanism in looms when the weft is exhausted, for instance, as shown by my copending application Ser. No. 627,839, filed March 26, 1923, and of which the present application is a divisional.

It is characterized, in addition ing mechanisms of the general type.

The invention is clearly illustrated in the accompanying drawings, in which Fig. 1 is an elevation view of the improved weft feeler mechanism on an enlarged scale.

Figs. 2 to 1 are diagrammatic side elevational views illustrating the cooperation between the weft feeler mechanism and the elements of the changing mechanism actuating thereby.

7 Referring now, more particularly, to the drawing there is provided a lever 25, which is normally held by a latch raised above the path of the pin 33, is released by the weft feeler 2 when the weft fails or becomes exhausted, and is raised again and re-engaged the latch, after the change of shuttles Rigid with the rock shaft 23 is a depending arm 21, which is pivoted at its lower end to a latching member 20 pivoted at 30 on the frame of the loom.

When the hook 25 is in its raised position the latch 20 engages behind a stop 26 on an adjustable part 27 which can be fixed by means of a clamping screw 28 in different positions on the frame Surrounding the bolt 32 is a helical compression spring 31 which bears'at one end against the stop 26 and at its other end against the projection 29. The spring 31 tends to turn the lever 21 in the direction corresponding to the downward swing of the hook 25, assists the hook to drop and ensure its engagement with the pin 33 on the driving lever 24, when the latch 20 is raised from the stop 26.

The weft feeler 2, which is slidably mounted in a bracket 3, projects through an opening in the shuttle when the lay L moves for ward, in the well-known manner, and is thereby pushed back against the action of a spring 1 by the weft in the shuttle (Fig. 2). The bracket 3 is provided with a rearwardly extending rod 5 by means of which it is supported on the loom. The rod 5 is slidably mounted in the eye 7 ofan upright 8 and is fixed in its adjusted position by means of a set screw 6. The upright 8 is carried by a bracket 10 mounted on the loom frame, being fixed at an adjustable height thereon by means of a set screw 9. The feeler 2 is provided with a lateral pin 11 on which is pivoted a finger constructed as a cranked lever 12, 13. On the shorter downwardly directed shuttle engaging arm 13 of the finger there is a set screw 14, which acts as a stop and is arranged to come into contact with the side of the shuttle S when the feeler 2 penetrates sufficiently far into the shuttle. The long shuttle engaging arm 12 of the finger normally rests on the bottom 15 of the bracket 10 but when the weft in the shuttle is exhausted, the screw 14 is struck by the shuttle and rocks the finger 12, 13 so as to raise the long arm 12 from the bottom of the bracket 10. A cranked lever 17, 18 is pivoted on a pin 16 on the side of the bracket 10, the arm 18 of said lever being connected by a connecting rod 19 to the latching member 20, while the arm 17 extends directly above the long arm 12 of the lever 12, 13.

On the underside of the hook is a curved part 3 1 along which the pins 33 of the driving lever 24 slides during the forward movement of the lay, when the hook 25 is in its lowered position, thereby raising the hook.

During the forward movements of the lay, when the shuttle contains a full pirn, the feeler 2 will be forced back in the usual manner (Fig. 1), as it can only penetrate a short distance into the shuttle and the set 3, Serial No.'627,839. Divided and this applicationfiled March 8, v

Serial No. 13,584.

screw 14 will not be struck by the shuttle. If on the other hand the pirn is spent (Fig. 2), the feeler 2 will penetrate so far into the shuttle during the forward movement of the lay L that the setscrew 14 will be struck by the shuttle, thus causing the finger 12, 13 to be rocked upwardly until its long arm 12 engages with the arm 17 of the cranked lever 17, 18. By this means, as the lay continues to swing forward, the a1'm17 will be constrained to follow the rearward movement ofthe feeler 2 and will be rocked in the direction, which causes the release of the latching member 20 from the stop 26. Owing to the release of the latching member 20, the arm 21 and the hook 25 is acted on by thespring 31 and the hook 25 is lowered ready to engage with the pin 33 on the driving lever 24 during the following rearward movement of the lay L.

The front wall, A of the shuttle box is raised, the rear Wall E swung inwards and both walls are locked in these positions during this rearward movement of the lay. On the lay L swinging forward again, the pin 33 leaves the hook 25 and by acting on the curve 34 raises the hook, whereby the arm 21 re-engages the latch 20 with the stop 2b, the latch having been lowered again in the meantime owing to the feeler 2 being moved back by the spring 4 and thereby releasing the cranked lever 17, 18 from the finger 12, 13 (Fig. 4).

It is believed in view of the foregoing that a further detailed description of the op eration of the invention is entirely unnecessary. Likewise. it is believed that the advantages of the invention will be readily apparent.

Having thus fully described the invention what is claimed as new and desired to be secured by Letters Patent is Feeler mechanism, including in combination, a hook pivoted on the loom frame, a driving lever engaged by the hook for actuating the hook, means including a latch for maintaining said hook out of engagement with the driving lever, a stop member provided on the loom frame for retaining said latch, means adjustably mounted on the loom frame for releasing said latch from said stop member on the weft failing, comprising afeeler intended to make contact with the weft in the shuttle during the forvard movements of the lay, a cranked lever pivoted on the weft feeler, one arm of said lever being capable of actuating the latch for releasing it, while the other arm is intended to be struck by the. shuttle when the weft is exhausted and means for raising the hook and re-engaging the latch with the stop member after the changing operation has been completed;

In testimony whereof I hereunto afiix my signature.

MAX AUERBACH. 

